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<H1 class="no-header">curs_inch 3x</H1>
<PRE>
<STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>                                                    <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>




</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
       <STRONG>inch</STRONG>,  <STRONG>winch</STRONG>,  <STRONG>mvinch</STRONG>,  <STRONG>mvwinch</STRONG> - get a character and attributes from a
       <STRONG>curses</STRONG> window


</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
       <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

       <STRONG>chtype</STRONG> <STRONG>inch(void);</STRONG>
       <STRONG>chtype</STRONG> <STRONG>winch(WINDOW</STRONG> <STRONG>*win);</STRONG>
       <STRONG>chtype</STRONG> <STRONG>mvinch(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG>
       <STRONG>chtype</STRONG> <STRONG>mvwinch(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x);</STRONG>


</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
       These routines return the character, of type  <STRONG>chtype</STRONG>,  at  the  current
       position in the named window.  If any attributes are set for that posi-
       tion, their values  are  OR'ed  into  the  value  returned.   Constants
       defined  in <STRONG>&lt;curses.h&gt;</STRONG> can be used with the <STRONG>&amp;</STRONG> (logical AND) operator to
       extract the character or attributes alone.


</PRE><H3><a name="h3-Attributes">Attributes</a></H3><PRE>
       The following bit-masks may  be  AND-ed  with  characters  returned  by
       <STRONG>winch</STRONG>.

       <STRONG>A_CHARTEXT</STRONG>     Bit-mask to extract character
       <STRONG>A_ATTRIBUTES</STRONG>   Bit-mask to extract attributes
       <STRONG>A_COLOR</STRONG>        Bit-mask to extract color-pair field information


</PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
       Functions  with  a  "mv"  prefix  first perform a cursor movement using
       <STRONG>wmove</STRONG>, and return an error if the position is outside the window, or if
       the window pointer is null.

       The  <STRONG>winch</STRONG>  function  does  not  return an error if the window contains
       characters larger than 8-bits (255).  Only the low-order 8 bits of  the
       character are used by <STRONG>winch</STRONG>.


</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
       Note that all of these routines may be macros.


</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
       These functions are described in the XSI Curses standard, Issue 4.

       Very  old systems (before standardization) provide a different function
       with the same name:

       <STRONG>o</STRONG>   The <STRONG>winch</STRONG> function was part of the  original  BSD  curses  library,
           which   stored   a  7-bit  character  combined  with  the  <EM>standout</EM>
           attribute.

           In BSD curses, <STRONG>winch</STRONG> returned only the character  (as  an  integer)
           with the <EM>standout</EM> attribute removed.

       <STRONG>o</STRONG>   System  V  curses  added support for several video attributes which
           could be combined with characters in the window.

           Reflecting this improvement, the function was altered to return the
           character combined with all video attributes in a <STRONG>chtype</STRONG> value.

       X/Open Curses does not specify the size and layout of attributes, color
       and character values in <STRONG>chtype</STRONG>; it is  implementation-dependent.   This
       implementation  uses 8 bits for character values.  An application using
       more bits, e.g., a Unicode value, should use the wide-character equiva-
       lents to these functions.


</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
       <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>
            gives an overview of the WINDOW and <STRONG>chtype</STRONG> data types.

       <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
            goes  into more detail, pointing out portability problems and con-
            straints on the use of <STRONG>chtype</STRONG> for returning window information.

       <STRONG><A HREF="curs_in_wch.3x.html">curs_in_wch(3x)</A></STRONG>
            describes comparable functions for the  wide-character  (ncursesw)
            library.



                                                                 <STRONG><A HREF="curs_inch.3x.html">curs_inch(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a>
<ul>
<li><a href="#h3-Attributes">Attributes</a></li>
</ul>
</li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
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